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If you're a strict vegetarian or vegan, you're at higher risk of B12 deficiency since plant-based foods don't naturally have B12
Alternatively, use an alcohol-based hand sanitizer if soap and water are not available
Cubilin is the intestinal receptor for the endocytosis of the "cobalamin-intrinsic factor" complex, whereas amnionless is a transmembrane protein
If a blood sample is delayed in its transport to the hospital, some of the red blood cells can burst, spilling their B12 into the blood, which raises the B12 test
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